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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: CID/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-245.209801
Energy at 298.15K 
HF Energy-244.587701
Nuclear repulsion energy163.338918
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3423 3162 0.21      
2 A' 3401 3141 0.09      
3 A' 3381 3123 2.16      
4 A' 1727 1595 10.26      
5 A' 1581 1461 38.46      
6 A' 1495 1381 11.60      
7 A' 1337 1235 9.26      
8 A' 1247 1152 17.91      
9 A' 1193 1102 10.22      
10 A' 1104 1020 1.93      
11 A' 1018 940 47.81      
12 A' 972 897 5.23      
13 A' 964 891 2.54      
14 A" 954 881 6.18      
15 A" 934 863 1.40      
16 A" 827 764 53.82      
17 A" 675 623 1.64      
18 A" 629 581 18.70      

Unscaled Zero Point Vibrational Energy (zpe) 13429.8 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 12405.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CID/6-31G*
ABC
0.33349 0.32512 0.16462

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.120 0.369 0.000
C2 0.609 -0.957 0.000
C3 0.000 1.117 0.000
N4 -0.689 -0.978 0.000
O5 -1.082 0.336 0.000
H6 2.143 0.695 0.000
H7 1.147 -1.889 0.000
H8 -0.185 2.176 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42181.34702.25592.20271.07322.25862.2287
C21.42182.16211.29792.12902.25441.07623.2320
C31.34702.16212.20601.33482.18413.21801.0744
N42.25591.29792.20601.37203.28902.04973.1939
O52.20272.12901.33481.37203.24493.15002.0466
H61.07322.25442.18413.28903.24492.76902.7592
H72.25861.07623.21802.04973.15002.76904.2776
H82.22873.23201.07443.19392.04662.75924.2776

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.007 C1 C2 H7 128.898
C1 C3 O5 110.441 C1 C3 H8 133.668
C2 C1 C3 102.655 C2 C1 H6 128.732
C2 N4 O5 105.733 C3 C1 H6 128.614
C3 O5 N4 109.165 N4 C2 H7 119.096
O5 C3 H8 115.891
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability